diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 920c61c..18f9ad8 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -197,7 +197,7 @@
 		.enter = &intel_idle },
 };
 
-static int get_driver_data(int cstate)
+static long get_driver_data(int cstate)
 {
 	int driver_data;
 	switch (cstate) {